class_docstr: The base Application for ipyparallel apps
  
  Primary extensions to BaseIPythonApplication:
  
  * work_dir
  * remote logging via pyzmq
  * IOLoop instance
docstr: initialize the app
docstr_tok: ["initialize","the","app"]
code: def initialize(self, argv=None):
      """initialize the app"""
      self.init_config_from_env()
      super().initialize(argv)
      self.init_deprecated_config()
      self.to_work_dir()
      self.reinit_logging()
  
imports: import logging
  import os
  import re
  import sys
  import traitlets
  from IPython.core.application import BaseIPythonApplication
  from IPython.core.application import base_aliases
  from IPython.core.application import base_flags
  from IPython.utils.path import expand_path
  from jupyter_client.session import Session
  from tornado.ioloop import IOLoop
  from traitlets import Bool, Instance, Unicode, default, observe
  from traitlets.config.application import LevelFormatter, catch_config_error
  from .._version import __version__
label_desc: Use image node_id 7 for calling the BaseParallelApplication obj's underlying member method code with example usage: obj.initialize(argv) without return types